EP0969343B1 - Régulateur de pression de gaz - Google Patents
Régulateur de pression de gaz Download PDFInfo
- Publication number
- EP0969343B1 EP0969343B1 EP99202144A EP99202144A EP0969343B1 EP 0969343 B1 EP0969343 B1 EP 0969343B1 EP 99202144 A EP99202144 A EP 99202144A EP 99202144 A EP99202144 A EP 99202144A EP 0969343 B1 EP0969343 B1 EP 0969343B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diaphragm
- gas pressure
- pressure regulator
- housing
- regulator according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
- G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
- G05D16/0658—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane characterised by the form of the obturator
Definitions
- the invention relates to a gas pressure regulator according to the preamble of the claim 1.
- a gas pressure regulator which has a housing in which a diaphragm valve device is provided which comprises at total four reinforced diaphragms in sheet metal as well as other spare parts, and in which is further provided with a spring device for their prestressing, which is mounted separately in a socket embedded in the housing, and supported by a cover.
- the gas pressure regulator has a compensation chamber which is limited by a working diaphragm and a compensation diaphragm and which is subject to the gas pressure prevailing in the supply line via a line separate link.
- the object of the invention is to build a gas pressure regulator according to the preamble of claim 1, to reduce the number of parts of the valve, so as to obtain a simplified assembly.
- the diaphragm valve device is molded by injection into a material having the elasticity of rubber, the diaphragm serving both working diaphragm and compensating diaphragm and ensuring possibly other functions.
- the result is not only a very simple but also a very low construction height for a regulator pressure of gas traversed by an axial current, which can be produced in the form of a regulator with one or two conduits.
- Figures 1 to 6 show different embodiments of a regulator gas pressure in axial section.
- the gas pressure regulator shown in Figure 1, consisting of a two-pipe regulator comprises a housing 1 substantially circular in top view, which has two concentric sheet metal envelopes 1 a , 1 b , assembled one to the other along its peripheral edge, for example by a crimp 1 c and an inlet pipe 2 and an outlet pipe 3 used for mounting in a gas pipe, which are arranged axially one following the other, respectively on one and the other of the shells 1 a, 1 b, the inlet and outlet pipes 2, 3 may be, e.g., welded or fixed in another way in the housing 1 .
- the diaphragm valve device further comprises a diaphragm 7 in one piece which has a nozzle-shaped passage opening, arranged in a central position, which extends around the valve seat 5 and which is limited, on the side directed towards the intake pipe 2, by a ring section 7 a which surrounds the valve seat 5 and which extends substantially axially, while, on the side directed towards the discharge pipe 3, it opens , with narrowing in a Venturi funnel in a pipe 7b which is engaged in the discharge pipe 3 while leaving a clearance.
- the diaphragm 7 further comprises a ring section 7c extending substantially radially, which s' extends from the region of the passage opening to the crimp 1 c where it is swollen and tightly sealed.
- the two ring sections 7a, 7c of the diaphragm 7 are wave-shaped in the region adjacent their outer edge covered, to permit axial displacement despite the embedding of their outer peripheries.
- an annular diaphragm disc 8 preferably embedded in an undercut formed between the ring sections 7 a , 7 c and which comprises, on each of its peripheries, interior and exterior, a section of support ring 8 a , 8 b which extends in the axial direction towards the intake side, these sections giving appropriate support to the ring sections 7 a , 7 tbsp .
- the diaphragm valve device In the absence of outlet pressure, the diaphragm valve device is in the closed position, in which a valve ring 7 d , formed on the inner side of the ring section 7 a , and which extends obliquely to the valve seat 5, comes in engagement with the side of the valve seat 5 which is directed towards the inlet pipe 2.
- This seat is provided with a small bore (not shown) to allow progressive filling of the gas pipe on the outlet side when gas pressure is again applied on the inlet side.
- the ring section 7 a forms a compensation chamber 11 a with the valve ring 7 d
- the ring section 7 c forms, with the sheet metal casing 1 b , a differential pressure chamber 11 b which is subjected to the pressure of the gas which leaves passing through the clearance formed between the pipe 7b and the discharge pipe 3.
- the diaphragm valve device When gas is captured from the outlet side, the diaphragm valve device opens, so that the gas entering through the intake pipe 2 flows through the passage openings 4 and then between the seat of the valve 5 and the working diaphragm 7, to enter the pipe 7 b and, from there, evacuate via the outlet pipe 3.
- the diaphragm 7 When the gas pressure is too high, the diaphragm 7 is closed by the fact that it engages with the valve seat 5 on the outlet side.
- the outside air pressure is used here as a reference pressure. This pressure prevails in a chamber 12 formed between the sheet metal casing 1 a and the diaphragm 7 and which is in communication with the outside space, that is to say with the atmosphere.
- the diaphragm 7 is thus a multifunction diaphragm which is at the same time a working diaphragm and a compensation diaphragm. He forms the central passage opening of the diaphragm valve device and closes tight in case of low gas pressure. Furthermore, it forms a convergent of Venturi as well as the waterproof seal of the case. Between the outer seal of the housing and the seal of the passage opening, there are no openings which should be closed from waterproof way. Since the diaphragm disc 8 is advantageously retained in an undercut of the diaphragm 7, there is no problem inner sealing. The diaphragm 7 in one piece allows a construction very compact with construction lengths of the order of 50 mm.
- a safety diaphragm 13 on which the spring 9 is supported in a reinforced region and whose bulged edges are tightened so watertight, with the outer edges of the ring sections 7 a , 7 c of the diaphragm 7.
- An annular spring 14 comprising several radial tabs is advantageously arranged on the outlet side, approximately at the level of the sheet metal casing 1b, this spring assisting the movement of the diaphragm 7 when the latter is in the closed position of the 'valve ring 7 d , towards the inlet side.
- the spring cup 10 is advantageously adjustable in the axial direction for adjusting the spring preload 9, using an adjusting screw 15 disposed in an off-center position which emerges outside the housing 1 and which can be rotate relative to the spring cup 10 by means of a threaded hole corresponding, the adjusting screw 15 being held in the housing 1 by a retaining clip elastic 17.
- the position of the adjusting screw 15 can be immobilized by means of a lead wire which is passed through an opening 18 of the adjusting screw 15 and through an eyelet 19 provided on the housing.
- the opening of the housing which receives the adjusting screw 15 is advantageously used as communication between room 12 and the atmosphere.
- a washer intermediate 20 which melts in the event of a fire, so that, via the spring cup 10, the helical spring 9 pushes the adjusting screw 15 into opening the case to close it.
- Spring retaining clip 17 here exercises an assistance action. This simply forms security against fire.
- valve seat 5 is fixed to the casing sheet 1a and comprises a pipe 5 to inlet side which adjoin an annular seat 5 b apertured passages 4 and a drive section 5 c which used to fix the sheet metal casing 1 a and to tighten the corresponding peripheral edges of the ring section 7 a of the diaphragm 7 and the safety diaphragm 13.
- the diaphragm valve device is arranged in the same way as in the embodiment of Figure 1 and the mode of operation is therefore corresponding.
- the annular spring 14 is missing here; instead, the diaphragm disc 8 is provided, on the side of the outer edge, with a curved section 8c in the direction of the annular section 7 c and which, in the presence of a corresponding deflection, arises on the annular section 7 c and, in this way, generates a corresponding return torque towards the entry side.
- the pipe 7b is constituted by a separate piece which, through the diaphragm 7, is connected to the diaphragm disc 8, for example by means of rivets, and which is guided in a guide bore 23 of the seat 5 of the valve by means of a finger 22 provided with a spherical head 21.
- the housing 1 is here composed of two cast iron elements 1 a ', 1 b ' which are produced respectively in one piece with the intake pipe and the exhaust pipe, 2, 3.
- valve seat 5 is tightened on the cast iron element 1 a ′, with the diaphragm 7 being tightly tightened relative to the corresponding peripheral edge 5 a which is connected to the valve seat 5 by radial fins 5 b .
- the spring cup 10 is here provided with an external thread and is locked in rotation in the housing 1 by means of a pin 24, in a socket 25 provided with a internal thread and which carries externally a toothed crown 26 thanks to which it is engaged with a pinion 27 which can be rotated by means of a pin 28 whose head is arranged on the outside of the case 1, and can be actuated for the adjustment of the spring cup 10, and is possibly protected by a hood 29.
- a retaining spring 30 can be used in addition, in case of fire, closing spring, an intermediate washer 31 previously melting.
- FIG 4 it is a regulator angle in which the intake pipe 2 is inclined at an angle of 90 ° to the exhaust pipe 3, the axes of the intake and exhaust pipes 2, 3 being arranged at an angle to the diaphragm valve device.
- Box 1 is here also composed of two cast iron parts 1a ', 1b' which are made in one piece with the inlet pipe and the outlet pipe 2, 3 respectively.
- the axis of the intake or exhaust pipe 2, 3 can also extend coaxially to the axis of the diaphragm valve device, while the axis the exhaust pipe and the inlet pipe 3, 2 are perpendicular.
- a ring 32 embedded in the housing 1 and which serves, on the one hand to tighten the diaphragm 7 sealingly along its outer periphery, in the region in which the two housing halves 1 a , 1 b are joined to one another and which, on the other hand is provided with a bearing zone 33 for one end of the disc 8 of the diaphragm.
- the valve ring 7 d is disposed obliquely relative to the axis of the diaphragm valve device and, moreover, the axis of the latter is disposed generally not centered relative to the housing 1 .
- the section 8a of the supporting ring is connected to this disc by the ribs and the spring 9 with the spring plate 10 is provided laterally to the displacement area of the diaphragm valve device.
- a removable cover (not shown) may be provided in the portion of the housing 1 above the spring 9 to allow optionally exchanging the spring 9.
- connection pipe provided with an internal thread is mounted on a distributor 36 joined to the housing 1, which is composed of an external ring 36 a and an inner ring 36 b , a seal 37 being disposed on the latter.
- the inner ring 36 b has a central discharge opening 38 and has several intake openings 39 separated from one another by ribs and arranged in a ring around the discharge opening 38.
- valve seat 5 In the discharge opening 38 is recessed sealing a tube section 40 extending from the inner ring 36b toward the valve seat 5 and is embedded in an opening of the seat, also at tight seal.
- the valve seat 5 is provided with a pipe 41 which extends the section of tube 40 in the direction of the connecting pipe 3, and which with the section of tube 40, forms the evacuation pipe and, at the same time, reinforces the Venturi effect of the funnel-shaped pipe 7b of the diaphragm 7.
- the housing casing 1b extends beyond a frustoconical section to the end of the pipe 41 which is furthest from the valve seat 5 and it is mounted in leaktight manner with respect to the latter by via a seal 42, formed by a U-shaped socket joint.
- the casing 1b of the housing has, in the frustoconical section, passage openings 43 for the gas which passes through the device diaphragm valve and runs along the outer periphery of the tube section 40, and which passes into the annular space formed between the casing 1b of the housing and the pipe 3 which is connected to it and, from there flows, for example in a gas meter screwed to the outlet pipe 3 with the interposition of a seal 44, and from which the gas flows again through the pipe 41 and the tube section 40.
- the seals 42 and 44 can also be made together in one piece.
- the tube section 40 can also be formed integrally with the inner ring 36 b .
- the section 8a of the support ring of the diaphragm plate 8 may have slots and ribs axial, in which case it can also be provided for an axial support of the ring section 7 a by appropriate ribs.
- valve seat 5 When the regulator is designed for high inlet pressures, it is advantageous to mount the valve seat 5 slightly obliquely, for example with a tilt angle of a few degrees, relative to the axial direction, so the diaphragm valve device does not open the same way over the entire periphery.
- the housing 1 may for example be round or even oval when viewed from above.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
- Gas Separation By Absorption (AREA)
Description
Le dispositif de soupape à diaphragme comprend en outre un diaphragme 7 d'un seul tenant qui présente une ouverture de passage en forme de buse, disposée en position centrale, qui s'étend autour du siège de soupape 5 et qui est limitée, sur le côté dirigé vers le tuyau d'admission 2, par une section d'anneau 7a qui entoure le siège de soupape 5 et qui s'étend sensiblement axialement, tandis que, sur le côté dirigé vers le tuyau d'évacuation 3, elle débouche, avec rétrécissement en entonnoir de Venturi dans un tuyau 7b qui est engagé dans le tuyau d'évacuation 3 tout en laissant un jeu. Le diaphragme 7 comprend en outre une section d'anneau 7c s'étendant sensiblement radialement, qui s'étend de la région de l'ouverture de passage jusqu'au sertissage 1c où elle est renflée et serrée de façon étanche.
Claims (20)
- Régulateur de pression de gaz avec un boítier (1) dans lequel est prévu, entre un tuyau d'admission (2) et un tuyau d'évacuation (3), un dispositif de soupape à diaphragme pour la fermeture d'une ouverture de passage semblable à une buse, le dispositif de soupape à diaphragme comprenant un siège de soupape (5) et un diaphragme de travail (7c) travaillant ici ensemble avec ledit siège, ledit diaphragme étant précontraint élastiquement et soumis d'un côté à une pression de référence et du côté de la chambre d'évacuation à un milieu de type gazeux, ainsi qu'un diaphragme de compensation (7a), limitant une chambre de compensation (11a), caractérisé en ce que le diaphragme de compensation (7a), en tant que section d'anneau s'étendant pour l'essentiel dans la direction du courant, forme avec le diaphragme de travail (7c) présentant une ouverture de passage, en tant que section d'anneau s'étendant pour l'essentiel perpendiculairement par rapport à la direction du courant, un diaphragme (7) d'un seul tenant.
- Régulateur de pression de gaz selon la revendication 1, caractérisé en ce que le diaphragme (7) du côté de l'évacuation présente un tuyau (7b) semblable à un entonnoir qui produit, selon le principe de Venturi, la pression du côté de l'évacuation sous le diaphragme de travail.
- Régulateur de pression de gaz selon la revendication 2, caractérisé en ce que le tuyau (7b) est formé d'un seul tenant avec le diaphragme (7).
- Régulateur de pression de gaz selon la revendication 2, caractérisé en ce que le tuyau (7b) est formé de façon séparée du diaphragme (7) et est conduit à l'opposé du siège de soupape (5).
- Régulateur de pression de gaz selon l'une des revendications 1 à 4, caractérisé en ce que le diaphragme (7) est renforcé par un disque de diaphragme (8) qui est en particulier, posé de façon libre.
- Régulateur de pression de gaz selon la revendication 5, caractérisé en ce que le disque de diaphragme (8) est mis en oeuvre dans une contre-dépouille entre les sections d'anneau (7a,7c) du diaphragme 7.
- Régulateur de pression de gaz selon l'une des revendications 1 à 6, caractérisé en ce que la périphérie du diaphragme (7) présente des bords formés en tant qu'anneaux d'étanchéité.
- Régulateur de pression de gaz selon l'une des revendications 1 à 7, caractérisé en ce que le diaphragme (7) présente au niveau de la face intérieure de la section d'anneau (7a), un anneau de soupape (7d) formé d'un seul tenant avec ladite section d'anneau (7a), ledit anneau de soupape (7d) entrant en prise avec le siège de soupape (5) lors d'une pression de gaz insuffisante.
- Régulateur de pression de gaz selon l'une des revendications 1 à 8, caractérisé en ce que le siège de soupape (5) présente une section d'anneau périphérique pourvue d'ouvertures de passage du courant de gaz (4).
- Régulateur de pression de gaz selon l'une des revendications 1 à 9, caractérisé en ce qu'un diaphragme de sécurité (13) est disposé entre le boítier (1) et le côté du diaphragme (7) soumis à la pression de référence.
- Régulateur de pression de gaz selon l'une des revendications 1 à 10, caractérisé en ce que le diaphragme (7) est soumis à un ressort (9) réglable maintenu par le boítier (1).
- Régulateur de pression de gaz selon la revendication 11, caractérisé en ce que le ressort (9) est maintenu dans le boítier (1) grâce à une coupelle de ressort (10) qui est disposée de façon à pouvoir être réglée par rapport au diaphragme (7).
- Régulateur de pression de gaz selon la revendication 12, caractérisé en ce que la coupelle de ressort (10) est réglable par l'intermédiaire d'une vis de réglage (15) actionnable au travers d'une ouverture dans le boítier.
- Régulateur de pression de gaz selon la revendication 13, caractérisé en ce qu'une rondelle intermédiaire (20) pouvant fondre pour des températures élevées est disposé entre la vis de réglage (15) et le boítier (1), de telle sorte qu'en cas de fonte du disque intermédiaire (20), l'ouverture dans le boítier soit fermée par l'intermédiaire de la vis de réglage (15).
- Régulateur de pression de gaz selon l'une des revendications 1 à 14, caractérisé en ce que du côté de l'évacuation dans le boítier, un ressort annulaire (14) percutant le diaphragme (7) dans sa position extrême du côté de l'évacuation est prévu.
- Régulateur de pression de gaz selon l'une des revendications 1 à 14, caractérisée ce que le disque de diaphragme (8) présente au niveau du bord extérieur une section (8c) recourbée en direction de la section de l'anneau (7c), laquelle lors d'une insuffisance de pression entre en contact avec la section de l'anneau (7c), ledit contact menant à une précontrainte dans la direction inverse.
- Régulateur de pression de gaz selon l'une des revendications 1 à 16, caractérisé en ce que le boítier (1) est formé de deux enveloppes de boítier (1a, 1b), entre lesquelles le diaphragme (7) est encastré de façon étanche au niveau de la périphérie extérieure du boítier (1).
- Régulateur de pression de gaz avec un boítier (1) dans lequel est prévu, entre un tuyau d'admission et un tuyau d'évacuation, un dispositif de soupape à diaphragme pour la fermeture d'une ouverture de passage semblable à une buse, le dispositif de soupape à diaphragme comprenant un siège de soupape (5) et un diaphragme de travail (7c) travaillant ici ensemble avec ledit siège, ledit diaphragme étant précontraint élastiquement et soumis d'un côté à une pression de référence et du côté de la chambre d'évacuation à un milieu de type gazeux, ainsi qu'un diaphragme de compensation (7a) limitant une chambre de compensation (11a), en particulier selon l'une des revendications 1 à 17, caractérisé en ce qu'en tant que régulateur axial à un seul conduit, il présente un tuyau d'évacuation s'étendant au travers du siège de soupape (5) ainsi qu'une enveloppe de boítier (1b) s'étendant vers l'extrémité du tuyau d'évacuation du côté de l'admission et étanchéifiée vis à vis dudit tuyau, ladite enveloppe portant un tuyau d'évacuation (3) et étant munie d'ouvertures de passage (43), qui débouchent dans un espace annulaire entre l'enveloppe du boítier (1b) et le tuyau d'évacuation (3).
- Régulateur de pression de gaz selon la revendication 18, caractérisé en ce que l'enveloppe du boítier (1b) comprend une section présentant les ouvertures de passage (43), en particulier pour l'essentiel en forme de cône tronqué, prolongeant l'enveloppe de boítier (1b) vers l'extrémité libre d'un tuyau (41), ladite enveloppe du boítier entourant le tuyau (41) qui limite le tuyau d'évacuation.
- Régulateur de pression de gaz selon la revendication 19, caractérisé en ce qu'un joint (42) formé en tant que joint d'étanchéité lié est prévu entre le boítier (1b) et le tuyau (41) qui limite le tuyau d'évacuation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19830043A DE19830043C1 (de) | 1998-07-04 | 1998-07-04 | Gasdruckregler |
DE19830043 | 1998-07-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0969343A1 EP0969343A1 (fr) | 2000-01-05 |
EP0969343B1 true EP0969343B1 (fr) | 2002-03-13 |
Family
ID=7873062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99202144A Expired - Lifetime EP0969343B1 (fr) | 1998-07-04 | 1999-07-01 | Régulateur de pression de gaz |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0969343B1 (fr) |
AT (1) | ATE214497T1 (fr) |
DE (2) | DE19830043C1 (fr) |
ES (1) | ES2174569T3 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10155314C1 (de) * | 2001-11-02 | 2003-04-17 | Schlumberger Rombach Gmbh | Überstrombegrenzer für eine Gasleitung |
DE10304260B3 (de) * | 2003-02-03 | 2004-07-29 | J. Eberspächer GmbH & Co. KG | Brennstoffdruckregler für ein Fahrzeugheizgerät |
DE102009023011A1 (de) * | 2009-05-28 | 2010-12-02 | G.S. Anderson Gmbh | Membranventilkörper |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2078341A (en) * | 1980-06-18 | 1982-01-06 | Crosweller & Co Ltd W | A gas pressure governor |
DE8113232U1 (de) * | 1981-05-06 | 1981-08-13 | Johann Baptist Rombach Gmbh & Co Kg, 7500 Karlsruhe | Druckregelgeraet |
US4424830A (en) * | 1981-12-16 | 1984-01-10 | Emerson Electric Co. | Gas valve |
DE8912084U1 (de) * | 1989-10-11 | 1989-11-30 | ELSTER Produktion GmbH, 6503 Mainz-Kastel | Gasdruckregelgerät mit Vordruck-Ausgleichsmembran |
DE19731088C1 (de) * | 1997-07-19 | 1998-09-03 | Schlumberger Rombach Gmbh | Gasdruckregler |
-
1998
- 1998-07-04 DE DE19830043A patent/DE19830043C1/de not_active Expired - Fee Related
-
1999
- 1999-07-01 DE DE69901009T patent/DE69901009T2/de not_active Expired - Lifetime
- 1999-07-01 AT AT99202144T patent/ATE214497T1/de not_active IP Right Cessation
- 1999-07-01 ES ES99202144T patent/ES2174569T3/es not_active Expired - Lifetime
- 1999-07-01 EP EP99202144A patent/EP0969343B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE214497T1 (de) | 2002-03-15 |
DE69901009T2 (de) | 2002-11-21 |
ES2174569T3 (es) | 2002-11-01 |
DE69901009D1 (de) | 2002-04-18 |
EP0969343A1 (fr) | 2000-01-05 |
DE19830043C1 (de) | 1999-10-14 |
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